Video: Vaccines and autism

Throughout the past week, the networks of NBC News have featured segments about autism, the fastest-growing serious developmental disorder in the United States. With as many as one in every 166 children born with some form of the disorder, it's a topic that interests millions of Americans. Thousands of you contacted us suggesting we address the possible connection between autism and childhood vaccines. Click "launch" above to hear contrasting viewpoints from two medical professionals as well as a discussion of the issues between NBC Nightly News anchor Brian Williams and chief science correspondent Robert Bazell.